Messages in this thread | | | Date | Fri, 15 Jun 2007 02:55:22 -0700 (PDT) | Subject | Re: [PATCH] Introduce compat_u64 and compat_s64 types | From | David Miller <> |
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From: Arnd Bergmann <arnd@arndb.de> Date: Fri, 15 Jun 2007 11:31:37 +0200
> One common problem with 32 bit system call and ioctl emulation > is the different alignment rules between i386 and 64 bit machines. > A number of drivers work around this by marking the compat > structures as 'attribute((packed))', which is not the right > solution because it breaks all the non-x86 architectures that > want to use the same compat code. > > Hopefully, this patch improves the situation, it introduces two > new types, compat_u64 and compat_s64. These are defined on all > architectures to have the same size and alignment as the 32 bit > version of u64 and s64. > > Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David S. Miller <davem@davemloft.net> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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